hyades.graphics.particle.ParticleManager.Interact C# (CSharp) Method

        private void Interact(Vector3 position, float radius, bool explode)
        {
            for (int i = 0; i < particle_array.Length; i++)
            {
                Particle particle = particle_array[i];

                if (particle.is_alive)
                {
                    Vector3 direction;
                    if(explode)
                        direction = particle.position - position;
                    else
                        direction = position - particle.position;

                    float distance = direction.Length();

                    if (distance < radius)
                    {
                        direction.Normalize();
                        particle.velocity += direction * 0.1f * (1 - distance / radius);
                    }
                }
            }
        }